Screen for lubricator pumps



W. J. SCHLACKS.

SCREEN FOR LUBRICATOR PUMPS. APPLICATION FILED NOV. 10. 1920.

1,413,066, Patented Apr. 18, 1922.

IIIIIII/ A m vi/vrole' ear wrtLIAM J. 'scnnaoxs,

i i-aoee,

' T 0 all whom it may concern.

Be it known that I, VILLIAM J. SoHLAoKs, a citizen of the United States, residing at Chicago, in the county'of Cook and State of Illinois, have invented certainnew anduseful Improvements in Screens for Lubricator Y Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled. in the art to which it'appertains to make and use the same. 7 I

This invention relates to force feed lubri cators, and more particularly, to the portions of a force feed lubricator referred to in the patent to Harris, N0. 1,271,035, pat

clearly shown and described in the patent,

and comprised a hood of suflicient size to extend over the top and surround the top of an open ended cylindrical well which was raised above the bottom of the oil reservoir. This construction necessitated the provision of an air equalizing member which, as shown in said patent, was made in the form of a small tube extending upwardly a considerable distance from the top of the hood. It is an object of this invention to so improve the said screen or hood structure that the air or vent tube will be no' longer necessary. v

It is a further object of the invention to I so constructthe hood that it will have additional and important functions over the hood disclosed in the patent.

These and other objects of the invention will become apparent as the description proceeds in connection with the accompanying drawing, in which The figure represents a portion of the lubricatorpump shown in elevation with certain parts in section.

Referring to the drawings, a lubricator device of the type shown in the patent to Harris isv illustrated, the same comprising oil pumpi ng cylinders 1 in which reciprocatlng 'plungers are moved by being conor CHICAGO, rumors.

rica.

. SCREEN roe LUBRICATOR rnmrs.

I Specification of Letters Itatent. Patentad A131. 18, 1322- Application filed November 10, 1920. Serial No. 423,099.

nected to a yoke mechanism reciprocated by a cam and spring mechanism, operated by shaft 2. The casing 33, as shown. is designed to form an oil reservoir and the lower or intake ends of the cylinders l'project downwardly into said casing. To prevent foreign matter which might be carried in the oil, from going into the intake end 4 of the pump cylinders, wells 5 are provided comprising cylinders with openings at or "near their upper end through whichthe oil passes into the same, and these wells have a hood or umbrella fmemb'er 6 extending down around the same a short distance below the opening therein. The heavy foreign matter in the oil will sink to the bottom of the casing 3 andwill not'enter the wells 5 or be drawn thereinto and is thus kept away fromthe intake, while any matter floating on the surface'of the oilwill alsobe prevented =from entering the wells and reaching the intake by the hoods 6.

The wells 5 can either be made as part of the casing 3, as shown in the patent to Harris, or they can be made as shown in the present drawing, as separate members having lateral openings through the walls thereof near their upper ends, said ends being formed with a portion of considerable thickness which is centrally bored and threaded to be screwed into the bottom of the pump cylinders which are threaded to receive thesame. With this arrangement, the casing can be made as a much simpler casting. r If the hood 6 were made solid, it would be necessary to furnish an air ventilating or pressure equalizing tube extending above the surface of the oil, as shown in'the patent to Harris. This is made necessary on account of air being trapped under the hood and being taken into the oil pump. It has been foundin actual practice that the small air tubes shown in the Harris patent are troublesome, being difficult to secure with sufficient rigidity and hence, ofter becoming bent and broken. The hoods 6 of the present structure are therefore provided with a multiplicity of small perforations.

With such perforations no air will. be trapped in the hood and the function of the air ventilating tubes is thus retained. While the structure is much improved and simplifled, the perforations are made sufficiently small so that no foreign matter which is large enough to injure or interfere with the pump can be taken therethrough. As there is considerable suction in the wells 5, due to the V the air will be forced out through theperforations and separate any foreign matter fromthe out-side of the hood.

It is thus seen that applicant has made a decided improvement on the structure shown tions.

in the patent to Harris and one whichis not only an improvement in structure thereof, but which has additional and desirable func- G enerally stated, the invention. consistsin the matter shown and described and set forth in thefappended claims.

What is claimed is:

1.. In a lubricator pump, the'combination.

with a reservoir having a well at its bottom,

said well having, openings leading thereinto near its upper end, of a suction tube extending down into said well and provided with a hood' surrounding the upper portion of said well but spaced therefrom and extend ing to a level below the opening into said well, said hood being provided with a plurality of small perforations.

2. In a lub'ricator pump,thecombination with a casinghaving an oil reservoir, of a cylindrical well having inlet openings on the sides, circumferentially spaced near the up per portion thereof, said openings being dis posed at a considerable distance. above the bottom of said casing, and-a suction tube extending down into said-well and to wh ch the said well is attached.

3. A lubricator pump structurehaving in 1 combination a casing forming an oil reservoir, a well in said reservoir having an inlet opening disposed a considerable distance above the bottom of said casing, a suction tube extending into said well and by which said well is carried and a per orated hood also carried by said tube and extending down over the well to a point below the ing thereof.

In testimony whereof I affix my signature in presence of two witnesses.

I L AM J; someone Witnesses: V

SARAH E..SOHMID, HARRI T MAGNUSON.

inlet open 

